| 桩负摩阻力时间效应分析 |
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| 引用本文： | 赵敏,张玉,刘银利. 桩负摩阻力时间效应分析[J]. 地下空间与工程学报, 2007, 3(Z1): 1327-1329 |
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| 作者姓名： | 赵敏 张玉 刘银利 |
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| 作者单位： | 1. 西安工业大学建工系,西安,710032
2. 西安建筑科技大学建筑设计院,西安,710055 |
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| 摘 要： | 负摩阻力对桩基的承载变形性状有重要影响.分析了大面积堆载下、地基土固结过程中,桩顶荷载大小、桩端支承条件等因素对桩身负摩阻力、中性点位置的影响.结果表明,在地基土固结过程中,桩身负摩阻力、中性点位置也处于一个变化过程中.桩顶竖向荷载越大,中性点深度越浅,桩身承受的下拽力越小.研究还表明,在地基土固结过程中,桩的承载力逐渐减小.
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| 关 键 词： | 负摩阻力 中性点 地基土 固结 |
| 文章编号： | 1673-0836(2007)07-1327-03 |
| 修稿时间： | 2007-08-10 |
Analysis of Negative Skin Friction of Single Piles Considering the Time Effect |
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| ZHAO Min,ZHANG Yu,LIU Yin-li. Analysis of Negative Skin Friction of Single Piles Considering the Time Effect[J]. Chinese Journal of Underground Space and Engineering, 2007, 3(Z1): 1327-1329 |
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| Authors: | ZHAO Min ZHANG Yu LIU Yin-li |
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| Abstract: | Negative skin friction of pile is an important factor which should be considered in pile foundation de- sign.Studies on the negative skin friction of single piles under different pile-head loading were conducted.The re- sults show that the location of neutral point and distribution of skin friction of pile shaft and pile capacity vary with the surrounding soil consolidation and the pile-head loading conditions.The larger the value of pile-head loading,the deeper the location of the neutral point,and the smaller the drag load on pile shaft will be. |
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| Keywords: | negative skin friction neutral point soils consolidation |
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